Power actuated gauge for paper cutting machines and the like



LIKE

June 4, 1940. w. M. REICHART POWER ACTUATED GAUGE FOR PAPER ,CUTTING MACHINES AND THE Filed Aug. 18. 1939 4 Sheets-Sheet 1 INVENTOR. WILLIAM M. REICHART M (QM? 196 June 4, 1940. w c RT 2,203,547

POWER ACTUA'IED GAUGE FOR PAPER CUTTING MACHINES AND THE LIKE Filed Aug. 18, 1959 4 Sheets-Sheet 2 LTf I a I "*1 INVENTOR. WI LIA H T 4 L M M REC AR ML v 9 ATTORNEYS June 4, 1940. M, REICHART 2,203,547

POWER AGTUATED GAUGE FOR PAPER CUTTING MACHINES AND THE LIKE Filed Aug. 18, 1959 4 Sheets-Sheet 3 INVENTOR WILLIAM M. REICHA RT ATTORINEYS.

June 4, 1940. w. M. REICZHART 2,203,547

POWER ACTUATED GAUGE FOR PAPER CUTTING MACHINES AND THE LIKE Filed Aug. 18, 1939 4 Sheets-Sheet 4 INVENTOR.

WILLIAM M REICHART ATTORNEYS.

Patented June 4, 1940 POWER ACTUATED GAUGE FOR, PAPER CUT- TING MACHINES AND THE LIKE William M. Reichart, Cleveland, Ohio, assignor to The Chandler and Price Company, Cleveland, Ohio, a corporation of Ohio Application August 18, lessysenal No. 290,895

10 Claims. (01.164-59) This invention relates, as indicated, to poweractuated gaugesfor paper cutting machines and the like and particularly, to means enabling the operator to manage such gauge with greater ease than has been the case in the past.

.Difficulty has long been experienced with power-actuated gauges of the type herein contemplated in that the finaladjustment of such gauges must generally be accomplished by means of manual controls and the mode of transfer from power to manual operation and back again has been inconvenient and wasteful of time.

It is, therefore, a primaryobject of this invention to provide a power-actuated gauge for paper 'cutting machines and the like which may be quickly and easily alternated between power and manual operation. A further object is to provide power operating means for a gauge of the type described, such means being readily disengageable from driving connection with such gauge.

Still=another object is to provide a power-actuated gauge in which the final adjustmentsmay be made by hand without necessarily disengaging the power drive.

Other objects of this invention will appear as the description proceeds.

To the accomplishment of the foregoing and related ends, said invention, then, consists of the means hereinafter fully described and. particularly, pointed outin the claims.

The annexed drawings and the following description set forth in detail certain mechanisms embodying the invention, such disclosed means 1 constituting, however, but one of various mechanical forms in which the principle of the invention may be used.

In said annexed drawings:

Fig. 1 is a top plan my invention; i

Fig. 2 is a fragmentary top View of the form of drive mechanism utilized in such embodiment; Fig. 3 is a cross-sectional view taken along the line 3-3 of Fig. 2;

Fig. 4 is a cross-sectional view taken along the line 4-4 on Fig. 3 showing the device providing for lost motion in the driving means;

Fig. 5 is a top plan view of another embodiment ,of my invention;

Fig. 6 is a cross-sectional view of the table showing the paper gauging means in elevation and means for locking said gauging means in any desired position; I Fig.7 is a side ,elevational view of thepowerview of one embodiment of actuating means showing the driving mechanism and controls therefor in cross-section;

Fig. 8 is a cross-sectional view taken along the line 8-8 on Fig. 7. showing one embodimentof the lost-motion and power disengaging means;

Fig. 9 is a fragmentary view of the under surface of the table showing the gauge-locking mechanism also shown in cross-section in Fig. 6; and

Fig. 10 is a diagrammatic side elevational View of a portion of the table showing the relative positions of the stack,gauge and knife.

Referring now more particularly to. the aboveidentified figures and. especially to Figs. 1, 2, 3

and 4, one embodiment of the present invention comprises a table I on which is mounted a stackpositioninggauge2 in movable relationto said table along a course determined by the slotted keyway 3 therein. An endless chain 4 is connected with said gauge and passes about sprock ets 5 and 6, one of which may be rotated by means of the hand-wheel l, thusmanually moving said gauge.

The power operating means comprises a reversible motor 8 horizontally mounted on said table and vertically disposedreduction gearing 9 in driving connection with a sprocket Ill. To force the chain 4 in driven engagement with said sprocket or optionally disengage the same, two freely rotatable sprockets H and I2 are mounted on a bracket 13 which is slidably mounted on said table by means of bolts l4 and I5 in said bracket. ,A link l8 connects said slidably mounted bracket to a lever l9 which, in turn, is operated by a control rod 20 which extends to the front of the table for convenience of manipulation. Said sprockets H and I2 may be locked in engaged or disengaged position by merely turning the handle 2| so that the boss 22 engages the proper shoulder of the bracket 23. When said handle is pulled out, the bracket l3 slides to the left as seen in Figs. 2 and 3, the sprockets H and I2 engage the chain 4 and force said chain into driven engagement with said driving sprocket I0, and the gauge 2 is moved to the desired position.

A final manual adjustment may be made by manipulation of the handwheel 1 after shutting off the motor, a certain amount of lost motion being provided in the power drive means to permit such adjustment. One mode ofproviding such lost motion is illustrated in Fig. 4, the sprocket l0 being keyed to theshaft 24 by means of the key 25. Said key fits in an arcuate recess 26 in the boss 21 of said sprocket, said recess prothrough a recess 43 in said spindle.

fitting in a sheave 45 is pivotally mounted so viding suflicient play to permit the necessary final manual adjustment.

In the embodiment of my new invention illusstrated in Figs. 5, 7 and 9, a similar table, gauge and. endless chain is employed to that above described. A reversible motor, horizontally mounted on the table drives a sprocket 28 through vertically disposed reduction gearing. In said figures, like parts are designated by like reference numerals.

The spindle on said reduction gearing here comprises a primary spindle 29 to which is keyed a hub 35, the upper portion 3| of which is radially enlarged to form a contact surface for a constant friction clutch. Said clutch comprises a shell 32 embracing such radially enlarged portion of said hub into which a secondary spindle 33 is threaded, By tightening said secondary spindle in said shell they may be brought into close engagement with the clutch linings 34 on said hub 30. In this Way the primary spindle 29 is caused to drive the secondary spindle 33, the whole acting as a unit except that when the gauge has been driven too far 'or otherwise jammed in such manner that damage might result to the machine, the clutch surface will slip and danger of such damage be avoided.

A sprocket 35 is mounted on said spindle 33 but is not keyed thereto. Said sprocket is in constant engagement with the endless chain 4 and is driven by means of a pin 35 resiliently mounted in a socket insaid spindle 33, supported on a spring 40. A boss 31 on said sprocket is radially reduced to provide an arcuate recess with opposed stop ends 38 and 33 operative to engage said pin. Thus, lost motion is provided to permit final adjustment by manual operation.

To disengage the power drive entirely, said pin 36 may be depressed so as no longer to be in engaging relationship to said .arcuate recess and stop ends 38 and 39. This may be accomplished by means of an axially movable rod 4! mounted centrally of said spindle 33 and rigidly connected to said pin 35 bymeans of a rod 42 passing A yoke 44 A conventional knife 47 may be employed in conjunction with a hold-down 48 which compresses the stack 49 and prevents any sidewise movement of the sheets. A groove 53 in'the table is filled by a strip of wood 5| to prevent injury to the knife edge.

knife. I

To guard against any displacement of the gauge after the proper setting has been obtained, a

locking device is employed, best shown in Figs.

6 and 9. A block 52 sliding in the slot? is securely bolted to the gauge 2 and forms a link in the endless chain 4 by which the gauge is moved. One side of said slot is extended to form a ridge 53 along the under side of'the table and another ridge 54 runs at a slight angle there-,

to. Between said ridges lies a Wedge 55 which is prevented from dropping out by plates such as and the flanged plate 51 on the block 52.-

A portion 58 of the Wedge 55 overlies the ridge 54 and carries teeth which engage gearteeth The gauge 2 is moved as above described toposition said stack relative to said of the member 59 which is fulcrumed about the pivotal attachment 60 on the table I. A series of links and levers connects said member with the handle 6| so as to permit an operator, by manipulating said handle, to rotate said member about said pivotal point 60. It is, therefore, possible, by a slight pull on said lever to force said wedge into tight engagement, with said block 52 and said ridge 54, thus securely locking the gauge in any desired position. The wedge may possible over the relatively cumbersome methods employed in the past. i

Other modes of applying the'principle of my invention may be employed instead of the one explained, change being made as regards the mechanism herein disclosed, provided the means statedby any of the following claims or the equivalent of such stated means be employed.

I therefore particularly point out and distinctly claim as my invention: i I

1. In paper cutting machines and the like, a table, a gauge movable thereon, an endless chain connected with said gauge, a motor, driving means connecting said motor and said chain,

means affording lost motion between said driving means and said chain, and means for disconnecting saiddriving means and said chain. Y 2. In paper cutting machines and the like, table, a knife, a movable gauge adapted to position a stack on said table relative. to said. knife, an endless chain connected with said gauge,-a reversible motor'horizontally" mounted on said table, vertically disposed reduction gearing be tween said motor and said chain, and means for connecting and disconnecting the upper end of said gearing and said chain.

3. In paper cutting machines and the likefa table, a knife, a movable gauge adapted'to position a stack on said table 'relativeto said knife,- an endless chain connected with said gauge, a

reversible motor horizontally mounted on said table, vertically disposed reduction gearing between said motor and said chain, means afford ing lost motion between said gearing and: said: chain, and means for connecting and disconnect ing the upper end of said gearing and said chain. 4. In paper cuttingv machines and the likefa table, a movable gauge adapted to position a stack on said table, an endless chain connected with said gauge, a sprocket adjacent said chain, -a

reversible motor in driving-connection with said.-

sprocket, and a pair of freely rotatable sprockets mounted on a slidably mounted bracket posix necting said motor and said sprocket, "said means" comprising a boss on said sprocket radially reduced to provide an arcuate recess with opposed stop ends, a drive spindle on said motor, and retractable means on said spindle operative to engage said stop ends on said sprocket.

6. In paper cutting machines and the like, a table, a knife, a movable gauge adapted to position a stack on said table, an endless chain connected with said gauge, a sprocket adjacent said chain, a reversible motor in driving connection with said sprocket, and a pair of freely rotatable sprockets mounted on a slidably mounted bracket positioned to move said chain into driven engagement with said first-named sprocket when said slidably mounted bracket is moved toward said chain.

7. In paper cutting machines and the like, a

table, a knife, a movable gauge adapted to position a stack on said table, an endless chain connected with said gauge, a sprocket adjacent said chain, a reversible motor in driving connection with said sprocket, and a pair of freely rotatable sprockets mounted on a slidably mounted bracket positioned to move said chain into driven engagement with said first-named sprocket when said slidably mounted bracket is moved toward said chain, and means for locking said bracket in position affording drivingengagement of said chain and sprocket.

8. In paper cutting machines and the like, a table, a knife, a movable gauge adapted to position a stack on said table relative to said knife, an endless chain connected with said gauge, a reversible motor mounted on said table, a sprocket adapted to rotate in driving association with said on said motor, and retractable means on said spindle operative to engage said stop ends on said sprocket,

9. In paper cutting machines and the like, a table, a knife, a movable gauge adapted to posi tion a stack on said table relative to said knife, an endless chain connected with said gauge, a sprocket adapted to rotate in a horizontal plane in driving association with said chain, a reversible motor mounted on said table, and means connecting said motor andsaid sprocket, said means comprising a spindle driven by said motor, a boss on said sprocket radially reduced to provide an arcuate recess with opposed stop ends, a socket in said spindle, a pin resiliently mounted in said socket and operative to engage said stop ends of said recess in said sprocket when said spindle is rotated in one or the other direction, and means for withdrawing said pin from said recess and engaging relationship to said stop ends. I a

10. In paper cutting machines and the like, a table, a knife, a movable gauge adapted to position a stack on said table relative to said knife, an endless chain connected with said gauge, a sprocket adapted to rotate in a horizontal plane in driving association with said chain, a reversible motor mounted on said table, and means connecting said motor and said sprocket, said means comprising a spindle driven by said motor, a boss on said sprocket radially reduced to provide an arcuate recess with opposed stop ends, a socket in said spindle, a pin resiliently mounted in said socket and operative to engage said stop ends of said recess in said sprocket when said spindle is rotated in one or the other direction, and means for withdrawing said pin from said recess and engaging relationship to said stop ends, said means comprising an axially movable rod mounted centrally of said spindle and rigidly connected to said pin, and means for depressing said rod and pin as desired.

WILLIAM M. REICHART. 

